package cn.tedu.coolshark.filter;

import cn.tedu.coolshark.pojo.vo.UserVo;

import javax.servlet.*;
import javax.servlet.annotation.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebFilter(filterName = "MyFilter",
        urlPatterns = {"/admin.html","/insertBanner.html"})
public class MyFilter implements Filter {
    public void init(FilterConfig config) throws ServletException {
    }

    public void destroy() {
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws ServletException, IOException {
        HttpServletRequest req = (HttpServletRequest)request;
        HttpServletResponse res = (HttpServletResponse)response;

        HttpSession session = req.getSession();
        UserVo user = (UserVo) session.getAttribute("user");
        if(user==null){
            res.sendRedirect("/login.html");
        }else{
            chain.doFilter(request, response);
        }
    }
}
